React software engineers and web application architects

React software engineers build TypeScript applications from product requirements and interface designs. Bring them in for new customer-facing products or internal applications where complex workflows need clear, accessible interfaces.

Frontend developers implement reusable components and responsive layouts, with keyboard interaction and semantic HTML checked against relevant WCAG criteria. They build forms with validation and handle loading or failure states explicitly. Storybook can document shared components, while React Testing Library tests user behavior as features change.

Web application architects assess an existing React codebase or establish technical boundaries for a new product. The work connects architectural decisions to release constraints and maintenance requirements.

• React and Next.js architecture: Choose client-side or server-side rendering according to content freshness and access requirements. Define routing and caching behavior.
• Frontend structure: Establish component boundaries and state ownership. Assess shared packages or micro-frontends where independent release requirements justify the added complexity.

Architects can implement reference code and review changes as the application develops.

React integration engineers connect interfaces to backend services and make business workflows usable when data arrives asynchronously or requests fail.

• REST and GraphQL integration: Implement typed API clients and server-state handling with TanStack Query or Apollo Client. Address pagination and cache invalidation against actual service behavior.
• Authentication and permissions: Integrate OpenID Connect sign-in and session handling. Align interface permissions with backend authorization, without treating hidden controls as security enforcement.

Integration work includes contract checks and error recovery for workflows spanning multiple services.

React maintenance engineers take responsibility for recurring defects and incremental upgrades within an existing development backlog. They assess dependency compatibility before changing React or Next.js versions, then validate affected workflows.

Performance work starts with browser profiling and Core Web Vitals measurements. Engineers investigate unnecessary rendering or oversized bundles before making targeted changes. Playwright regression tests can protect critical user paths, while focused refactoring reduces coupling in components that are difficult to change. Specialists can also investigate production errors using existing monitoring tools.